{"product_id":"supertech-black-nitride-intake-valves-plus-0-5mm-subaru-ej20-ej25-turbo","title":"Supertech Black Nitride Intake Valves +0.5mm - Subaru EJ20 \/ EJ25 Turbo - WRX \/ WRX STI","description":"\u003ch2\u003eSupertech Black Nitride Intake Valves +0.5mm - Subaru EJ20 \/ EJ25 Turbo - WRX \/ WRX STI\u003c\/h2\u003e\n\u003cp\u003eSupertech black nitride intake valves for the turbocharged EJ20 and EJ25 DOHC engines in the Subaru WRX and WRX STI, Forester GT \/ XT and Liberty GT. They are made from 21-4N stainless steel, and the black nitride surface treatment hardens the stem and lowers friction in the guide, which helps the valve and guide last on a hard-working engine. The head is +0.5mm oversize (36.50 mm), for heads with oversize or recut valve seats.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptions:\u003c\/strong\u003e set of 8 (SIVN-1012-8) or single (SIVN-1012). Most builds need the set; the single valve is for replacing one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Oversize valves need the valve seats machined to suit. Not for the 2015-on WRX (VA), which has the FA20 engine. Installation by a professional engine builder is recommended.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStainless Steel 21-4N intake valve\u003c\/li\u003e\n\u003cli\u003eHead diameter 36.50 mm (+0.5)\u003c\/li\u003e\n\u003cli\u003eStem diameter 5.96 mm\u003c\/li\u003e\n\u003cli\u003eOverall length 104.35 mm (standard)\u003c\/li\u003e\n\u003cli\u003eSingle-groove keeper\u003c\/li\u003e\n\u003cli\u003eBlack nitride surface treatment for a harder, lower-friction stem\u003c\/li\u003e\n\u003cli\u003eSold as a set of 8 (every intake valve in the engine) or as a single valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/supertech-valve-guides-intake-subaru-ej20-ej25\"\u003eSupertech Manganese Bronze Intake Valve Guides - Subaru EJ20 \/ EJ25 Turbo - WRX \/ WRX STI\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/supertech-valve-stem-seals-intake-subaru-ej20-ej25\"\u003eSupertech Polyacrylic Intake Valve Stem Seals - Subaru EJ20 Turbo \/ EJ25 - WRX \/ WRX STI \/ Forester \/ Liberty\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/supertech-dual-valve-spring-retainer-kit-subaru-wrx-sti-fxt-lgt-ej20-ej25\"\u003eSupertech Dual Valve Spring Kit 82 lb - Subaru EJ20 \/ EJ25 Turbo - WRX \/ WRX STI\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/arp-head-stud-kit-subaru-ej20-ej25-dohc-wrx-sti-gc-gd-ge-gh-gr-gv-va-forester-sf-sg-sh-liberty-gt-be-bh-bl-bp\"\u003eARP 2000 Head Stud Kit - Subaru EJ20 \/ EJ25 DOHC - WRX \/ STI (GC \/ GD \/ GE \/ GH \/ GR \/ GV \/ VA) \/ Forester (SF \/ SG \/ SH) \/ Liberty GT (BE \/ BH \/ BL \/ BP)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"chicane-links\"\u003eShop more: \u003ca href=\"\/collections\/supertech\"\u003eSupertech\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eNeed help choosing parts? Contact our team at \u003ca href=\"mailto:sales@chicaneaustralia.com.au\"\u003esales@chicaneaustralia.com.au\u003c\/a\u003e.\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Set of 8","offer_id":54305568981285,"sku":"SIVN-1012-8","price":390.0,"currency_code":"AUD","in_stock":true},{"title":"Single","offer_id":54305569014053,"sku":"SIVN-1012","price":50.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/2943\/6709\/files\/stainless-intake-1g-8_0bd48880-5577-44bf-9c79-e716bc04a852.jpg?v=1793313840","url":"https:\/\/www.chicaneaustralia.com.au\/products\/supertech-black-nitride-intake-valves-plus-0-5mm-subaru-ej20-ej25-turbo","provider":"Chicane Australia","version":"1.0","type":"link"}